Method and composition for rendering materials fireproof



UNITED STATES PATENT @FFHCE.

FRANK 0. WHEELER, OF MONTREAL, QUEBEC,'CA1\TAD'A.

METHOD AND COMPOSITION FOR REN'DERING MATERIALS FIRE-PROOF.-

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No Drawing.

To all whom it may concern:

. Be it known that I, FRANK C. \VHEELER, a subject ofthe King of Great Britain, and resident of the city of Montreal, in the Province of Quebec and Dominion of Canada, have invented certain new and useful Improvements in Methods and Compositions for Rendering Materials Fireproof, of which the following is a full, clear, and exact description.

plied not only to fabrics but to raw materials, as Well as articles of wood, paper and fibrous products.

The main constituent or base of the fireproofing material is borax, which may be used either in solution or in its powdered form,

, but preferably in solution. The borax dissolves readily in water, and may be used in quantities ranging from one-quarter of a pound to one pound per gallon of water. To this solution may be added from one to two ounces of commercial alum, the strength of the solution depending largely on the texture of the material to be treated. In applying the composition to fabrics and the like, the materials are placed in a suitable Specification of Letters Patent.

Application filed September 18, 1917.

Patented Ma 2, 1922.

Serial No. 192,003.

reservoir or tank containing the proper amount of solution, and disposed in such manner as to enable the solution to reach every part of the material. The temperature of the contents of the tank is then raised to boiling point for a period of approximately one hour. For loosely woven fabrics, the boiling process maybe shortened slightly, and for very heavy or tightly woven materials, the time of boiling may be increased. Raw materials such as cotton, wool, kapok and the like may be similarly treated, and such fibrous materials as wood paper, paper board and the like may be treated by immersing the articles in the solution until they become impregnated.

In some cases where the boiling treatment is impracticable or inconvenient, a mixture of powdered borax and alum may be sprinkled or blown over the surface of the materials. This method may be foundv particularly advantageous in treating bales of cotton, kapoc and the like.

Having thus described my invention, what I claim is 1- 1. A fireproofing material comprising the.

FRANK C. WHEELER. 

